#include <stdio.h>
#include "./include/head.h"

int ff()
{
    int a = 20;
    int b = 12;
    printf("a = %d, b = %d\n", a, b);
    printf("a + b = %d\n", add(a, b));
    printf("a - b = %d\n", subtract(a, b));
    printf("a * b = %d\n", multiply(a, b));
    printf("a / b = %f\n", divide(a, b));
    return 0;
}

// gcc -I ./include/ -L ./lib/ -l calc -o app main.c
// gcc -o app main.c -I ./include/ -L ./lib/ -l calc   // 
